@Lindagaf first off, for many families, as odd as it sounds, it’s no biggie about a year’s high tuition. Don’t assume it is.
Second, your statement “The UC system may not accept all of your Colby credits. That’s a lot of money to be wasting on a “failed experiment” simply is not based on facts. If OP takes standard courses, they will transfer.
Thirdly, OP may actually decide he/she likes Colby and will stay. This sounds a lot like freshman jitters, so it’s not crucial to impulsively dump the baby out with the bath water.
At the end of the day none of us knows OP’s situation. There are options. As I noted she CAN go to Colby and transfer to a CCC or could go to a CCC straight off. Both variants happen all the time. It certainly will not be a failed experiment.